ac versus dc powered battery back-up systems
The sewage pool system in the home usually relies on the heavy ac main pump to drain the water into the home through its drainage system.
To compensate for the possibility of a power outage, the pool may include batteries-
In addition to the main pump, operate the DC or AC drive pump.
What are the differences in function and performance of these ac/EDM pumps?
The DC-based backup system is usually powered by a DC pump, a 12 volt deep circulating battery (
2 batteries if 24 V system)And a charger.
Most pumps used as part of the back
The Up system was originally designed as a tank bottom pump for the vessel and is not heavy but some work properly.
A feature of the DC system and the AC system is that its rate of discharge is related to the degree to which the battery power is charged.
The fully charged 12 volt battery will provide the maximum capacity power for the pump.
With the consumption of battery power, the pumping rate of the pump is reduced.
For example, a given pump will be discharged at a rate of 30 gallons per minute with a fully charged battery, but, when half of the power remains in the battery, it is possible to pump only 15 gallons per minute.
When the battery is about to run out, the pump may discharge at less than 5 gallons per minute.
The DC system consumes DC current efficiently and can run continuously for several hours (
Working continuously and continuously for several days, up to 10 hours at most).
Communication Based back
The Up system is usually composed of an AC heavy duty pump, a 12 volt deep circulating battery (
If it is a 24 volt system, it is two batteries)
, And an inverter with a battery charger).
The inverter converts the DC power supply of the battery into an AC power supply.
Unlike the EDM pump, the AC pump will operate close to its maximum potential capacity until the battery runs out.
For example, if the AC pump can be pumped at a speed of 50 gallons per minute, it will continue to pump at a speed close to this (
Minimum loss over time)
Until the battery runs out of power.
It is important to select an AC pump with a valid amp rating (3-7 amp hours)
, Otherwise, the system will not run long enough before the battery source runs out and the system is turned off.
The efficient AC pump can discharge the best DC system because it is faster than most DC systems, although it is faster than the good DC pump system to shut down.
The key advantage of using the AC system is that it is easier to match the main pump.
Since an AC system requires an inverter, it is usually more expensive than a DC system that does not require an expensive inverter.
The best way to compare different available systems is to compare the total amount of gallons discharged with a given battery (
Start with a fully charged battery recommended by the manufacturer)
Ideally, the data determined by the independent testing agency represents the time and performance before the system is shut down).
These values should be in 8-10 ft. head.
The head is the distance from the vertical discharge of the pump (
In the basement, usually 8-10 ft).
In most cases, the flow rate of the DC system will be less than that of the main pump.
The owner and/or contractor must make a judgment as to whether this is good enough.
The AC system can match the performance of the main pump more effectively.
Best of all, the homeowner has determined the efficiency of his main pump in a big storm and matched that performance with the performance of the rear pump
Up system, both AC system and DC system.